Sources of failures by lifecycle phase

Out of Control Why control systems go wrong and how to prevent failure, HSE Books 2003, is intended to raise the awareness of the causes of control system failures by describing actual case studies. While the analysis may not be considered statistically significant due to its small sample size (i.e., only 34 incidents were studied), the analysis does illustrate the importance of the safety lifecycle in the management of process risk. [Pg.140]

No reproduction or networking permitted without license from IHS [Pg.140]

Ucensee=Fermilab Research Aliance LLC 970717001 Not Ibr Resale. 0SAI7/2014 02 47 52 MDT [Pg.140]

The following were identified as root causes in the HSE study [Pg.141]

Safety requirements specification Functional requirements specification Safety integrity requirements specification Design and implementation Installation and commissioning Operations and maintenance Actions by operation personnel Actions by maintenance personnel Changes after commissioning Modification and retrofit De-commissioning [Pg.141]

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